18kt white gold case with a black alligator leather strap. Fixed 18kt white gold bezel. Silver dial with white gold hands and Roman numeral hour markers. World time scale appears around the outer rim. Dial Type: Analog. Date display at the 1 o'clock position. 24 hour (GMT) sub-dial. A. Lange & Sohne Calibre L031.1 hand wind movement with about 72 hours of power reserve. Scratch resistant sapphire crystal. Pull / push crown. Skeleton case back. Case size: 41.9 mm. Case thickness: 11 mm. Round case shape. Band width: 20 mm. Band length: 8 inches. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: world time, big date, GMT, second time zone, hour, minute, small second, power reserve indicator, day/night indicator. Additional Info: twin mainspring barrels, 21,600 vph, 54 jewels, 417 parts. Luxury watch style. Watch label: Made in Germany. Item Variations: 116 039, 116-039, 116/039, 116039. A. Lange and Sohne Silver Dial 18kt White Gold Black Leather Mens Watch 116.039.